Fort Collins has the safest drivers in the U.S.

FORT COLLINS, Colorado (NEWSCHANNEL 3) - According to a national study, the safest drivers are in Colorado.

Allstate released its America's Safest Driving City and Fort Collins, Colorado is number one for the fourth time in a decade.

The study assesses drivers in the 200 largest U.S. cities based on analysis of claims data. That determines the places with the greatest frequency of collisions when factoring in weather conditions, traffic volume and population.

The worst drivers on the list were in Worcester, Massachusetts.

Detroit also made the list at 104th place and Grand Rapids came in 116th place in the safest cities to drive in.